Testing system for testing senders of automatic telephone exchanges



Sept. 15, 1925. 1,553,308

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS 0F AUTOH'ATIC TELEPHONE EXCHANGES Filed Sept. 29. 1924 27 Sheets-Sheet 1' *n/ry Sept. 15, 1925. 1,553,368

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS 0? AUTOMATIC TELEPHONE EXCHANGES Filed Sept. .29, .1924 2'7 Sheets-Sheet 5 Sept 15, 1925. 7 1,553,308

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDEHS OF AUTOMATIC TELEPHONE EXCHANGES 11m Sept. 29, 1924 27 Sheets-Sheet J" Sept 15, 1922s. 1,553,317]

W, L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS 0F AUTOMATIC TELEPHONE EXCHANGES Fild 12.29. 1924 27 ets shaietfis N IIHII QT .7.9. ILB

L165, I0. |2J51 Sept '15, 5925.

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES 27 Sheet gig k.

Sept. 15, 1925. 1,553,303

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING snrmsas OF AUTOMATIC TELEPHONE EXCHANGES Filed Sept. 29. 1924 27 Sheet t 4 by My.

Sept- 15, 1925.

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES Sept. 29. 1924 2'? Sheets-Sheet 8- Sept. 15, 192%. 1,553,308

w. 1.. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES Filed Sept. 29. 1924 27 Sheets-Sheet 9 MUM! f mama, U] I A 7 129/5 may 4,

Sept" 1925. 1,553,308

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES Filed Sept. 29. 1924 2'? Sheets-Sheet 1:0

Sept. 15, 1925,

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE axcrmmfis 2'7 Sheets-Sheet 11 Al y n5 Q Q VN\\ Wu T 53min QNQ g 3% Filed Sept. 29,

Sept. 15, 1925.

w. L. DODGE ET AL TESTING SYSTEM FOR TESTING SBNDERS OF AUTOMATIC TELEPHONE EXCHANGES Filed Sept. 29. 1924 27 Sheets-Sheet 12 Sept. 15, 1925. 1,553,308

w. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS 0F AUTOMATIC TELEPHONE EXCHANGES Filed Sept. 29. 1924 27 Sheets-Sheet 15 Sept. 15, 1 925.

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES 27 Sheets-Sheet 14 Filed Sept. 29. 1924 Sept. 15. 1925;.

W. L. DODGE ET AL.

TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHMIGSS 27 Sheets-Sheet 15 \Nhv Sept. 15, 1925.

w. L DODGE ET AL TESTING SYSTEM FUR TESTING SENDERS 0F AUTOMATIC TELEPHONE EXCHANGES Sept 15, 1925. 1,553,308

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES F 1 Sept. 29. 1924 Sheets-Sheet 1'1 Sept. 15, 1925. 1,553,308-

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES Filed Sapt- 29. 1924 27 Sheets-Sheet 18.

Sept. 15, 1925. 1,553,308

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS 0F AUTOMATIC TELEPHONE EXCHANGES Filed Sept. 29. 27 Sheets-Sh e 9 Sept. 15, 1925. 1,553,308

W. L. DODGE ET AL TESTING SYSTEM FOR TESTING SENDERS OF AUTOMATIC TELEPHONE EXCHANGES F ed Se t. 4 27 Sheets-Sheet 20 Z [Z- 2 am 2,4 6.8.!018 

